Now all list formats and even the warning message about obsolete TagsQuery
arguments are integrated into a HTML fragment template. Various goodies like
differently shaded odd/even rows and 'no results message' have been added.
Oddly squeezed ListTagged tables are gone as well - all due to re-using big
parts of the TicketQuery code from Trac core.

This is controlled by a new option cloud_caseless_sort that defaults to
False for backwards-compatibility and doesn't touch the more general issue of
case-sensitive tag handling (in TagsQuery) as detailed in #4200.